US 10,864,596 B2Granted

Metal laminate material and production method therefor

AssigneeToyo Kohan Co., Ltd.

InventorsKouji Nanbu, Teppei Kurokawa, Takashi Koshiro, Hironao Okayama

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Abstract

It is an objective of the present invention to provide a metal laminate material, which has sufficient strength as well as molding processability, lightweight properties, and radiation performance, which is a metal laminate material that has a two-layer structure of a stainless steel layer and an aluminum layer or a three-layer structure of a 1st stainless steel layer, an aluminum layer, and a 2nd stainless steel layer, wherein tensile strength TS is 200≤TS≤550 (MPa), elongation EL is not less than 15%, and a surface hardness Hv of the stainless steel layer is not more than 300 for the metal laminate material.

Claims7

Dependent claims

A metal laminate material, which has a two-layer structure of a SUS316L stainless steel layer and an aluminum layer or a three-layer structure of a 1st SUS316L stainless steel layer, an aluminum layer, and a 2nd SUS316L stainless steel layer,

wherein tensile strength TS is 200≤TS≤550 (MPa), elongation EL is not less than 15%, and a surface hardness Hv of each SUS316L stainless steel layer is not more than 300 for the metal laminate material, and
wherein each SUS316L stainless steel layer has an average crystal grain size of 1.5 μm to 10 μm, and the number of shear bands traversing a straight line having a length of 10 μm, the straight line extending along the normal direction (ND) in a sample coordinate system on a cross-sectional observation image viewed from the transverse direction (TD) in the sample coordinate system, is less than 5 for the SUS316L stainless steel layer.

Dependencies are inferred from the claim text.

Facts

Application: 15/764,381Filed 30 Sep 2016
Priority: JP 2015-19307530 Sep 2015
Published: US 2018/0281103 A14 Oct 2018
Granted: 15 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

B23K 20/04
Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating: by means of a…
B21B 1/22
Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section ; Sequence of operations in milling trains;…:…
B32B 15/01
Layered products comprising a layer of metal: all layers being exclusively metallic
B32B 15/012
All layers being exclusively metallic: one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy

Family

US 2018/0281103 A1Pre-grant publication · published 4 Oct 2018
US 10,864,596 B2This patent

From the US filing history. Foreign family members aren’t listed.

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